Distribution including data for V. sachalinensis which has been elevated to species status. ENGELMANN et al. (1993) list Vipera berus pseudaspis SCHREIBER 1912 as separate subspecies. V. b. bosniensis most likely not in Romania (Sos 2008).

Synonymy partly after STEJNEGER 1907.

Taxonomy: Vipera berus bosniensis may represent a valid species (U. Joger in MCDIARMID et al. 1999). Vipera berus sachalinensis ZAREVSKY 1917 has been considered as valid species by some authors. JOGER et al. (2007) found that bosniensis, nikolskii, barani, sachalinensis nested within various populations of V. berus.

Vedmederja V I; Grubant V N; Rudayeva 1986. On the question of the name of the black viper in the forest steppes of the European part of the USSR [in Russian]. VESTNIK KHAR'KOVSKOGO UNIVERSITETA (No. 288): 83-85